Adhesive feeder



Patented l, 1936 UNITED STATES PATENT L oFFicE Original applicationAugust 24. 1933, Serial-No.

686,497. Divided and this application September 2l, 1934, Serial No.744,904 n 3 Claims.

tus'having twin feeding plungers connected to and .communicating with anauxiliary reservoir,

and having means connecting said auxiliary reservoir to a supplycontainer. The apparatus contains daubers forspreading the glue in thecaps after it is fed thereto, and these daubers travel with the caps ashort distance, in `order to thoroughly spread the adhesive.

Many devices have been provided for automatically feeding glue or otheradhesives, and some are particularly adapted for yfeeding glue to theinside of bottle caps, however, in order to expedite the operation ofbottle cap assembling machines, it has been foundA necessary to feedglue to two caps at the same time, to provide means automaticallyregulating the amount of glue being fed, and also to provide means forthoroughly spreading the glue, in which the spreader travels with thecap a short distance. Feeding glue to two caps at a' time makes itpossible Yto speed up the assembling machine 85 and at the same time,permit the glue feeder to operate with a comparatively slow motion,which is desirable because glue does not drop as quickly as water ormost uids, and it is therefore desirable to operate the glue feedercomparatively 40 slow. It is also desirable to provide a comparativelylarge opening in the tip of the glue feedery in the open position.

in order to permit glue cf comparatively heavy consistency to passtherethru, so that -the construction of the tips of the glue feeders isalso 4B very important.

The object of the invention is, therefore to provide. a glue feederadapted to feed two caps at the same time. and also adapted to operatewith a comparatively slow motion.

` Another object is to providemeans for spreading the glue which isadapted to travel with the bottle caps in order to insure completespreading thereon.

Another object is to provide a glue feeder having comparatively largeopenings in the up,

in which means is provided for readily closing these openings, so that avery small amount of glue may be fed therethru.

Another object is to provide a glue feeding lmechanism in which the glueis only fed when s a cap is in place.

Another object is to provide a glue feeding mechanism in which theamount of glue fed thereby may be changed.

Another object is to provide a glue feeding M mechanism in which theglue is contained in a sealed container until it is'released at the tipof a plunger extending downward from said.

container.

.A further object is .to provide a glue feeding 15 mechanism fromwhichthe glue may lreadily be cleaned.

And a still further object is to provide-a glue or adhesive feedingapparatus that is particu- .bers vertically slidable 4androtatably'mounted;

Other features and advantages of the invention will appear from thefollowing description, taken in connection with the drawing, wherein:

Figure 1 is a detail showing an elevation of the glue feeding device.

Figure 2 is a cross sectionthru the mechanism for operating the gluefeeder. 35

Figure 3 is a detail showing a plan view of the glue feeder with partsomitted.

Figure 4 is a cross section, on an enlarged scale,

thru one of the glue feeding ngers showing the valve therein in ,theclosed position. Figure5 is a similar section showing the valve.

Figure' 6 is a view looking toward the under side of the glue feedingnger. y

Figure 'I isa view looking downward into the .g5 glue feeding fingerwith the closure at the uppe end thereof and the spring omitted.-

In the drawing the device is shown as it may be made wherein the glue oradhesive is fed by an adhesive carrying container 9 I provided withl 50g ;videdwith anges 93 that may be held to the bottoms of the container9| by screws 94.

opening 96 which is slighly larger than the plunger. A valve seat 91- isprovided at the inner end of the opening 96 and a valve disc 98 ismounted on the plunger 95 and is held in a recess 99 in a sliding member|00 in which the plunger is mounted and which is held downward byaspring inside of the casing. I'he outer wall` of the member |00 isprovided with grooves 02,

-as shown in Figure 7, which permit glue to pass downward therethru andit will be noted that as the plunger 95 is moved inward to the positionshown in Figure 5, glue may pass downward thru the grooves |02 and outof the lower end of the casing thru the opening 96. In the upper end ofthe casing is a seat |03 for the spring and this is held in place by aspring clip |04, which snaps into a groove |05 in the inside of theupper end of the casing. This spring memberis in the form of a splitring with one end curved slightly upward, so that it will snap into thegroove and also so that it may be pried upward by a screw driver. Theedges of-the member |03 are provided with grooves |06 thru which glue oradhesive may pass from the interior of the container 9| into the casing92. It will, therefore, be noted that normally the valves in the casing92 will be closed, whereas when the casings are lowered into the caps sothat the lower ends of the plunger 95 engage the inner surface of thecaps they will open the valves and permit a small amount of glue to dropinto the cap. 'I'his arrangement provides means for shutting off theglue at the point where it isv used and the glue may be completelyinclosed in sealed containers until it arrives at this point.

fio

The container 9| is provided with a spout |01 which is to be connectedby a tube or hose |08 ,to a supply container which may be located at ||5on the lower side of a frame |I6. The iframel |6vmay be of any type ordesign and may beconnected to any suitable supporting means.'

A roller ||9 is pivotally mounted on the back of the plate ||0 and thisroller rides upon a cam" |20, mounted on the back of a gear |2| which ispivotally mounted in a hub |22 thru a shaft |23, and the gear |2| mesheswith` another gear |24 fixedly mounted on a vertical sleeve |25 to whichitis held by a set screw |261. The sleeve is rotatably mounted on a pin|21 which extends from the-hub |22, as shown in Figure 2. On the upperend of the sleeve |25 is a gear |28, which rotates the sleeveandthis'gear meshes with another gear |29 on the glue spreading attachmentand thel gear |29 meshes withja gear |30 on a vertical shaft |3|,which'extends downward and the lowver end of which is provided with agear |32 that meshes with the gear 45 below the cap carrying element.These gears are arranged and proportioned to time the movement of theglue attachment and also of the spreading attachment so' that the valvesand plungers will move downward into caps as the caps pass thereunder.The roller |'I9 will dropwoi of one of the projections of the The lowerend of the casing is rounded and a small plunger 95 extends out of thelower end thru an cam |20, so that the spring I3 will force thecontainer 9| 'downward into caps, as shown in Figures 1 and 5 the capsarrive at their respective positions.A

The sleeve |25 is rotatably mounted in an ad-l justable bearing |33,which is threaded in a hub |34 on the lower side of the member ||6 andthe moving this bearing upward or downward, the

sleeve |25 will also move, and the position 'of the gears, cam andcontainer 9| may be adjusted vertically so that -the exact amount ofopening of the .valves in the lower part of the container 9| may beobtained. The position of -the bearing |33 may be locked by a screw |36,as shown in Figure 2, however, it will be understood that this may beheld by a set screw or any other means. The upper end of the bearing |33engages the lower surface of the gear |28, so that this gear may beraised and lowered with the bearing and operating mechanism. On thelower end of the hub |34 is a bracket'l31 which is provided withoutwardly extending members in which the upper ends of the rods may beheld, as shown in Figures 1 and 2. This member may be held to the hub inany mannerl or by any means and the rods may also be flxedly heldtherein in any. manner or by anymeans. A bar |38.may be freely mountedon the upper end of the pin |33 and the opposite end may be freelymounted on the upper end of a shaft |39 upon which the gear 29 ismounted, and this bearing will hold the` Ygears |28 and |29 in theirrelative positions and at the s ame time permit the gear |28 to moveupward and downward with the adjusting movement of the bearing.

Thefshaft |39 extends downward thru a hub |40 on the lower side of themember ||6 and a hub |4.| isprovided at the lower end which may berotated by the gear 29 thruthe shaft, and daubers or spreaders |42 maybe slidably held in the periphery of the member |4| in bushings |43. Thebushings may be held in openings |44 in the hub by clips |45, as shownin Figures 1 and 3', and it will be noted that these may be readilyremoved and replaced when it is desired to clean the members |42. 'Ihemembers |42 are mounted on spindles |46 on the upper ends of which areweights |41, the lower ends of which ride upon the upper surface of astationary cam |43 and the cam is provided with a recess |49, whichpermits the weights |41 to force the spindles and members |42 downwardas the caps arrive at positions directly below the members 42, as shownat the points |50 in Figures 1 andu3. It will be understood that thesemembers may be mounted and operated in any other manner or' by any othermeans and also that any othermeans may be used for spreading the glue oradhesive on the inside of the caps;

It will be understood that other changes may be made in the constructionwithout departing' from the spirit of the invention. One of which.

changes may be in the use of other means for raising and lowering thecarrying container, another may be in'theuse of other means for raisingand lowering the 'spreaders, another may be' in the use of valves oi'any other type, and still another may bein the use of this glue oradhesive feeding apparatus for any other substance or for v l u anyother purpose.

The construction may readily be understood from the foregoingdescription. In use the de vice may be provided as shown and describedand, with the carrying container Si connected by a tube |08 to a supplycontainer. thecontainer 9| will be filled with glue and, as the deviceis operated by a gear 45, thru the train of gears at the upper end, thecam |20 will raise and lower'the container 9i and, as it arrives at thelower position, the points 95 will engage the surfaces of caps 26, sothat the member |00 and the disc $8 will be raised above the seat 91, sothat the lower ends -will be opened, thereby permitting glue topassdownward thru the openings 96 and olf of the ends of the members II.With small amounts of vglue deposited thereby on the surfaces of thecaps 26 the container 9| will raise, so that the valve will close, andas the caps pass under the members IMI these members will drop downward.as shown in Figure 1, so that the daubers will engage the inner surfacesof the caps and spreadthe glue. The daubers will remain in the caps fora short distance, when the members I l1 will ride up the cam surface andlift the daubers out of the caps. It will be noted that as the feedingof the glue is dependent upon the pins l5 engaging a surface, the gluewill only be fed when a cap is in place as, if a cap has been omitted,the points Il will not engage the surface thereof, and therefore 'thevalves will not be opened. It will be understood that any adhesive maybe-fed by this apparatus and also that it may beused for feedinganyothersubstanoeanditmayakobeusedfor any other purpose.

Having thus fully described the invention, what I claim as new anddesire to secureby Letters Patent, is:

i. In an adhesive feeding apparatus, a slidable container, a flexibleconnection from said conin relatively short round end tubular casings inthe lower end of said container with stems ex.

c position of said container.

`tainerto means for supplying an adhesive. valves 2. An adhesive feedingapparatus, as described n iniclaim l, in which the cam raises thecontainer and valves with a positive movement and springs move saidcontainerv and valve downward with a yielding movement.

3. An adhesivefeedin'g apparatus, as described in claim 1, in which thecontainer and operating means theref'r'may be raised or lowered as aunit to adjust the position thereof in relation to the IJS- .K nnamomnaar.

